Question

What is the atomic number?
A. the number of neutrons in the nucleus
B. the number of protons and neutrons
C. The number of protons in the nucleus
D. the number of electrons

Answer 1

b

Answer 2

B, I believe... and isn't this chemistry :p

Answer 3

i mean c

Answer 4

Its c

Answer 5

thanks and yea i went there and no one answerd for like 45 mins so i came here please help with a few more

Answer 6

ok

Answer 7

u can post them here

Answer 8

What is a "period" on the periodic table?
A. the elements along the "stairstep"
B. all of the elements at the bottom of the chart
C. a horizontal row
D. a vertical row

Answer 9

C or D

Answer 10

don't remember which lol

Answer 11

i think its d

Answer 12

ya, its d. :)

Answer 13

ok d it is

Answer 14

Which of the following items would have the lowest density?
A. A 6 cm3 block of ice with a mass of 4 grams
B. A 12 cm3 block of wood with a mass of 3 grams
C. A 2 cm3 block of lead with a mass of 11 grams
D. A 12 cm3 block of aluminum with a mass of 2 grams

Answer 15

hold on, i'm doing some research.

Answer 16

ok

Answer 17

My wi-fi isn't working that well. :(

Answer 18

/.\ I'm totally not sure... take a guess if you can ? c:

Answer 19

mine is too

Answer 20

ok i say c

Answer 21

i would guess d

Answer 22

It's d

Answer 23

thanks

Answer 24

A solution of hydrochloric acid is placed on a balance. Magnesium metal is added and the mass is recorded. The solution is stirred and the mass of the solution is recorded every 10 minutes. The following data is collected:

Time (mins) Mass of Hydrochloric Acid and Magnesium (g)
0 160.0 g
10 156.5 g
20 152.0 g
30 147.5 g
40 142.5 g
What does the data show is occurring?
A. The hydrochloric acid and magnesium metal react to form a precipitate.
B. The hydrochloric acid and magnesium metal do not react.
C. The hydrochloric acid and magnesium metal react to form a soluble compound.
D. The hydrochloric acid and magnesium metal react to form a gas.

Answer 25

I would guess D only because the weight is decreasing over time

Answer 26

ok sorry had to do something

Answer 27

Which metal has the lowest atomic weight of those listed here?
A. gold (Au)
B. silver (Ag)
C. copper (Cu)
D. tin (Sn)

Answer 28

thanks

Answer 29

copper

Answer 30

had to get my periodic table for that one :p

Answer 31

gold - 196.96
silver- 107.86
copper- 63.54
tin- 118.71

Answer 32

oh ok thanks The amount of a substance that can be dissolved in a given solvent is its:
A. solubility.
B. suitability.
C. polarity.
D. liquidity.
you guys have been alot of help and i thank you for that and sorry if my respones are slow

Answer 33

a

Answer 34

A

Answer 35

lol

Answer 36

whats lol

Answer 37

Most main group elements found within the same family on the periodic table tend to have
A. the same chemical activity.
B. the same electron affinity.
C. the same number of valence electrons.
D. the same atomic radius.

Answer 38

c

Answer 39

^ what they said :p and lol means laugh out loud

Answer 40

i know what lol is but why did they say i is what i meant

Answer 41

Examine the table below.

Substance pH value
Ammonia 11.6
Apple Juice 3.0
Baking Soda 8.0
Grapes 4.0
Lye 14.0
Stomach Juice 1.0

Which of these substances is the most basic?
A. apple juice
B. grapes
C. baking soda
D. lye

Answer 42

D

Answer 43

Which is a substance made up of only one kind of atom?
A. mixture
B. element
C. compound
D. solution

Answer 44

@SiennaSurfer @Vallarylynn16

Answer 45

I would think B ...

Answer 46

ok ty i have just like 5 more

Answer 47

What is an element?
A. a material that is shiny and usually hard and strong
B. a substance made up of hydrogen and one other kind of atom
C. a substance made of just one kind of atom that cannot be broken down into something simpler
D. a substance made of just one kind of molecule that cannot be broken down into something simpler


Which of the following is an example of oxidation?
A. A cube of sugar dropped into a cup of hot water slowly disappears.
B. Sodium bicarbonate is added to vinegar in water, and gas bubbles fizz to the surface.
C. A car gets rusty over the course of a few years.
D. Charcoal is placed on a grill and lighting fluid poured over it.

Answer 48

theres 2 in 1

Answer 49

both are C

Answer 50

ok

Answer 51

cool thanks

Answer 52

n a _______ mixture, the ingredients are distributed evenly throughout the mixture, while in a _______ mixture, the ingredients are unevenly distributed throughout.
A. homozygous; heterozygous
B. heterogeneous; homogeneous
C. homogeneous; heterogeneous
D. heterozygous; homozygous

Answer 53

c

Answer 54

brb

Answer 55

?

Answer 56

If an acid is combined with a base of equal strength, the result will most likely be
A. a stronger base.
B. a stronger acid.
C. impossible to tell without testing the pH.
D. a neutral solution.
thanks

Answer 57

ok

Answer 58

c

Answer 59

Uhmm u do realize that the atomic number is determined by the amount of protons in an atom right

Answer 60

protons in the nucleus im sorry so the answer is C for the first one not D

Answer 61

and the second one is D

Answer 62

I put c

Answer 63

oh, second 1

Answer 64

ya the one about the equal base the answer is a neutral solution

Answer 65

Density refers to a physical property that is measured using a ratio of _________ divided by _______ so that two objects of the same size can still have very different density.
A. concentration, mass
B. height, width
C. weight, height
D. mass, volume

Answer 66

D. mass, volume

Answer 67

Which group on the periodic table is least likely to be involved in a chemical reaction?
A. group 18
B. group 1
C. group 13
D. group 17

Answer 68

Yay!!!

Answer 69

thanks

Answer 70

i think d

Answer 71

no, wait!

Answer 72

i think a

Answer 73

ok

Answer 74

Which elements have only one electron orbit or shell?
A. hydrogen (H) and helium (He)
B. helium (He) and lithium (Li)
C. krypton (Kr) and iron (Fe)
D. hydrogen (H) and calcium (Ca)

Answer 75

I would think A ... totally not sure though

Answer 76

Ya the answer is A

Answer 77

Robert has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister really liked the model, he spent two weeks in his dad's workshop building her a Styrofoam copy. When he picked up the models to take them back inside the house, which physical property would he immediately notice upon picking them up?
A. ductility
B. density
C. conductivity
D. color

Answer 78

thanks to every one that helped thanks a ton

Answer 79

.. density maybe .. not sure

Answer 80

me neither